Find the perimeter of a rectangle whose length is 5x+7 and width is x.
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Answer:
12x + 14
Step-by-step explanation:
Perimeter of a rectangle is 2( l + b)
Putting values of l & b we get,
Perimeter = 2(5x + 7 + x)
= 2( 6x + 7)
= 12x + 14.
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